光学系统对磁动式测氧仪稳定性影响的研究
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摘要
先后采用平行光法和透镜成像法获得光斑,比较这两种光斑对线阵CCD数据采集稳定性的影响。结果显示采用透镜成像法获得的光斑更窄、亮度更均匀、边界更清晰锐利,线阵CCD数据采集的稳定性更高。提出了普通透光玻璃的拉丝形成抛物柱面透射光栅的模型,解释了光斑出现明暗相间条纹和光斑波形上出现小峰的原因。小峰造成线阵CCD采集数据出现错误,光斑像元值不稳定。采用光学玻璃作为透光玻璃,消除了光斑波形上的衍射小峰,有效地控制了光斑像元值的采集误差,提高了测氧仪的稳定性和测量精度。
The parallel light method and lens imaging method are used to generate light spots,and the influence of the light generating method on the stability of linear CCD is investigated.The lens imaging method generates a narrower and more homogeneous light spot with sharper border,resulting in a higher stability of the CCD data.In order to explain the fringe pattern and small peak on the light spot,a wire drawing induced parabolic cylinder transmission grating model of the normal glass is proposed.The results show that the CCD data error and the instability of the pixel of the light spot are resulted from the small peaks.As an improved method,the optical glass instead of normal glass is used as the transmission glass.The method can reduce the diffraction peak of the light spot and the error of the pixel,and enhance the stability and accuracy of the magnetomotive oxygen detector.
The parallel light method and lens imaging method are used to generate light spots,and the influence of the light generating method on the stability of linear CCD is investigated.The lens imaging method generates a narrower and more homogeneous light spot with sharper border,resulting in a higher stability of the CCD data.In order to explain the fringe pattern and small peak on the light spot,a wire drawing induced parabolic cylinder transmission grating model of the normal glass is proposed.The results show that the CCD data error and the instability of the pixel of the light spot are resulted from the small peaks.As an improved method,the optical glass instead of normal glass is used as the transmission glass.The method can reduce the diffraction peak of the light spot and the error of the pixel,and enhance the stability and accuracy of the magnetomotive oxygen detector.
引文
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[17]薛喜昌,田明丽.双曲柱面透射光栅衍射的数值分析[J].应用光学,2009,30(3):510—513.Xue Xichang,Tian Mingli.Numerical analysis of hyperbolic cylinder transmission grating diffraction[J].Journal of Applied Optics,2009,30(3):510—513.
[18]陈万年,王树森,陈斌,等.用于X射线激光实验研究的列阵柱面透镜线聚焦系统[J].光学学报,1991,11(9):829—833.Chen Wannian,Wang Shusen,Chen Bin,et al.Cylinder lenses array line focus system for X ray laser experiments[J].Acta Optica Sinica,1991,11(9):829—833.
[2]林日亿,王弥康,辛福义.注汽锅炉烟气氧含量分析控制[J].节能,2003,10:23—25.Lin Riyi,Wang Mikang,Xin Fuyi.Analysis and control of oxygen content in flue gas of steam injection boiler[J].Energy Saving,2003,10:23—25.
[3]魏茂金,赖森财,黄思俞,等.磁动式氧含量分析仪的研制[J].光学精密工程,2007,15(5):761—766.Wei Maojin,Lai Sencai,Huang Siyu,et al.A oxygen content magnetomotive analyzer[J].Optics and Precision Engineering,2007,15(5):761—766.
[4]黄思俞,魏茂金.气体流量对磁动式测氧仪影响的研究[J].电子测量与仪器学报,2013,27(12):118—1187.Huang Siyu,Wei Maojin.A research on the effect of gas-flow rate for magnetomotive oxygen detector[J].Journal of Electronic Measurement and Instrument,2013,27(12):1181—1187.
[5]Toyohiko,Hayashi.Calibration of linear CCD cameras used in the detection of the position of the light spot[J].IEICE Trans INF&SYST,1993,E76-D(8):912—918.
[6]Dong T,Ni J.Measuring principle of vertical target based on one linear array CCD camera[J].Appl.Opt.,2011,32(3):482—485.
[7]骆文博,王广志.基于线阵CCD的高精度位置检测[J].清华大学学报:自然科学版,2002,42(9):1139—1143.Luo Wenbo,Wang Guangzhi.High precision position detection based on linear array CCD[J].Journal Of Tsinghua University:Natural Science Edition,2002,42(9):1139—1143.
[8]李长贵,刘敬海,林幼娜,等.线阵CCD用于实时动态测量技术研究[J].光学技术,1999,25(2):4—7.Li Changgui,Liu Jinghai,Lin Youna,et al.Linear array CCD is used to study the real-time dynamic measurement[J].Optical Technique,1999,25(2):4—7.
[9]敖磊,谭久彬,崔继文.一种快速高精度激光CCD自准直仪圆目标中心的定位方法[J].光学学报,2007,27(02):253—258.Ao Lei,Tan Jiubin,Cui Jiwen.A rapid and high precision laser CCD autocollimation round the center of the target positioning method[J].Acta Optica Sinica,2007,27(02):253—258.
[10]赖森财,魏茂金,黄思俞.CCD磁动式测氧仪的电路设计[J].三明学院学报,2007,24(4):386—389.Lai Sencai,Wei Maojin,Huang Siyu.CCD moving magnetic circuit design of oxygen meter[J].Journal of Sanming University,2007,24(4):386—389.
[11]谢印忠,庄松林,张保洲.基于线阵CCD的光谱仪定标研究[J].仪器仪表学报,2011,32(3):546—550.Xie Yinzhon,Zhuang Sonlin,Zhuang Baozhou.Based on the study of linear CCD spectrometer calibration[J].Chinese Journal of Scientifie Instrument,2011,32(3):546—550.
[12]李晶,袁峰,丁振良.基于BP神经网络的外姿态测量系统线阵CCD标定[J].仪器仪表学报,2010,31(5):1138—1141.Li Jing,Yuan Feng,Ding Zhenliang.The attitude measuring system based on BP neural network linear CCD calibration[J].Chinese Journal of Scientifie Instrument,2010,31(5):1138—1141.
[13]李江昊.线阵CCD信号采集与处理系统研究[J].微处理机,2008,04(2):138—142.Li Jianghao.Line array CCD signal acquisition and processing system[J].Microprocessors,2008,04(2):138—142.
[14]孙燕峰,李成贵,魏鹏.一种基于线阵CCD的工件外尺寸测量装置的设计与实现[J].电子测量技术,2012,35(2):20—23.Sun Yanfeng,Li Chenggui,Wei Peng.Design and implementation of a workpiece size measurement device based on linear array CCD[J].Electronic Measurement Technology,2012,35(2):20—23.
[15]马文蔚,解希顺,周雨青.物理学(第五版)下册[M].北京:高等教育出版社,2006:102—108.Ma Wenwei,Xie Xishuen,Zhou Yuqing.Physics(The Fifth Edition)2[M].Beijing:Higher Education Press,2006:102—108.
[16]薛喜昌,田明丽,孙现亭.抛物柱面透射光栅的衍射特性[J].平顶山学院学报,2009,24(2):76—79.Xue Xichang,Tian Mingli,Sun Xiantin.The diffraction properties of parabolic cylindrical transmissive grating[J].Journal of Pingdingshan University,2009,24(2):76—79.
[17]薛喜昌,田明丽.双曲柱面透射光栅衍射的数值分析[J].应用光学,2009,30(3):510—513.Xue Xichang,Tian Mingli.Numerical analysis of hyperbolic cylinder transmission grating diffraction[J].Journal of Applied Optics,2009,30(3):510—513.
[18]陈万年,王树森,陈斌,等.用于X射线激光实验研究的列阵柱面透镜线聚焦系统[J].光学学报,1991,11(9):829—833.Chen Wannian,Wang Shusen,Chen Bin,et al.Cylinder lenses array line focus system for X ray laser experiments[J].Acta Optica Sinica,1991,11(9):829—833.